Resonance-type non-contact power supply system
First Claim
1. A resonance-type non-contact power supply system comprising:
- power supply equipment including a power source section and a primary resonance coil configured to be supplied with power from the power source section; and
power receiving equipment including a secondary resonance coil configured to receive power from the primary resonance coil by magnetic field resonance and a load configured to be supplied with power received at the secondary resonance coil, whereinthe primary resonance coil, the secondary resonance coil, and the load constitute a resonant system,wherein within a predetermined range of frequencies, at least one combination of two frequencies of the power source section is determined, at which input impedances of the resonant become equal, the at least one combination including the frequencies which are defined f2n-1 and f2n with f2n-1<
f2n, which are defined such that, if the input impedances of the resonant system at the time of supply of power of the frequencies f2n-1 and f2n to the resonant system are represented by Z2n-1 and Z2n, equal input impedances of the resonant system satisfy Z2n-1=Z2n, where n is a natural number,the output frequencies fo of the power source section is set to lie within the frequency range between the two frequencies to satisfy f2n-1≦
fo≦
f2n, andthe load includes a rectifier and a battery,wherein real parts of the input impedances Z2n-1 and Z2n represented by R2n-1 and R2n, and imaginary parts of the input impedances Z2n-1 and Z2n are represented by X2n-1 and X2n, andwhen the condition Z2n-1=Z2n is met, the real parts and the imaginary parts are set as follows;
R2n-1=R2n and X2n-1=X2n≠
0.
1 Assignment
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Accused Products
Abstract
A resonance system that receives power from a power source section is configured by at least a primary resonance coil, a secondary resonance coil, and a load. The output frequency fo of the power source section is set to lie within one of the frequency ranges f1≦fn≦f2, f3≦fo≦f4, . . . , f2n-1≦fo≦f2n. The frequencies f1, f2, f3, f4, . . . , f2n-1, f2n (f1<f2<f3< . . . <f2n-1<f2n) are defined such that, if the input impedances of the resonant system at the time of supply of power of the frequencies f1, f2, f3, f4, . . . f2n-1, f2n (f1<f2<f3< . . . <f2n-1<f2n) to the resonant system are represented by Z1, Z2, Z3, . . . , Z2n-1, Z2n, the input impedances satisfy Z1=Z2, Z3=Z4, . . . , Z2n-1=Z2n.
11 Citations
4 Claims
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1. A resonance-type non-contact power supply system comprising:
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power supply equipment including a power source section and a primary resonance coil configured to be supplied with power from the power source section; and power receiving equipment including a secondary resonance coil configured to receive power from the primary resonance coil by magnetic field resonance and a load configured to be supplied with power received at the secondary resonance coil, wherein the primary resonance coil, the secondary resonance coil, and the load constitute a resonant system, wherein within a predetermined range of frequencies, at least one combination of two frequencies of the power source section is determined, at which input impedances of the resonant become equal, the at least one combination including the frequencies which are defined f2n-1 and f2n with f2n-1<
f2n, which are defined such that, if the input impedances of the resonant system at the time of supply of power of the frequencies f2n-1 and f2n to the resonant system are represented by Z2n-1 and Z2n, equal input impedances of the resonant system satisfy Z2n-1=Z2n, where n is a natural number,the output frequencies fo of the power source section is set to lie within the frequency range between the two frequencies to satisfy f2n-1≦
fo≦
f2n, andthe load includes a rectifier and a battery, wherein real parts of the input impedances Z2n-1 and Z2n represented by R2n-1 and R2n, and imaginary parts of the input impedances Z2n-1 and Z2n are represented by X2n-1 and X2n, and when the condition Z2n-1=Z2n is met, the real parts and the imaginary parts are set as follows; R2n-1=R2n and X2n-1=X2n≠
0. - View Dependent Claims (2, 3, 4)
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Specification